Adjustable and retractable hand reamer device



I. GARDNER 3,216,288 ADJUSTABLE AND RETRACTABLE HAND REAMER DEVICE Nov.9, 1965 2 Sheets-Sheet 1 Filed Nov. 19 1962 INVENTOR. IRVING GARDNER;7mP/VV 2 Sheets-Sheet 2 N k m mm m n: m @N Nov. 9, 1965 GARDNERADJUSTABLE AND RETRACTABLE HAND REAMER DEVICE Filed NOV. 19 1962 IRVINGGARDNER United States Patent 3,216,288 ADJUSTABLE AND RETRACTABLE HANDREAMER DEVICE Irving Gardner, Hunter, N.Y. Filed Nov. 19, 1962, Ser. No.238,510 1 Claim. (Cl. 77-75) This invention relates to an adjustable andretractable hand tool assembly and is particularly directed at a reamingdevice or similar tool.

According to the invention, there is provided a tool assembly having atubular casing or barrel in which is an axially slidable plug which canbe fixed in position in the casing. Extending from the plug axially ofthe casing is a reamer, file, stylus or other working tool. The tool maybe tapered in form so that different cross sections of the tool can beselectively located at the end of the casing out of which the tool isadapted to extend. The tool in extended position can be locked inposition with respect to the casing. The tool can be used to clear ahole in a gas burner or to make the hole larger. By advancing andretracting the tool different sizes of burner holes can be formed orcleared. The tool can be completely retracted int-o the casing to aprotected position when not in use. A clip may be provided on the devicefor supporting it on a users pocket or other garment portion when thetool is not in use.

In another form of the invention, the movable plug carries two toolswhich can be alternately extended out of the casing. Both tools can bewholly retracted into the casing when not in use.

It is therefore a principal object of the invention to provide a handtool assembly including a cylindrical casing with a working tooladjustably retractable and extensible with respect to the casing.

A further object is to provide a hand tool assembly as describedincluding one or two working tools extending axially of the casing andcarried by a plug slidably disposed in the casing.

Another object is to provide a hand tool assembly as described whereinthe working tools are reamers, files, styluses, scribers, screwdrivers,saws, pencils, etc.

Another object is to provide a hand tool assembly including acylindrical casing with an extensible and retractable tool therein, thecasing being calibrated to indicate the degree of extension.

Another object is to provide a hand tool assembly having an oval setscrew for holding the tool in an adjusted moved position.

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIG. 1 is a perspective view of a device embodying the invention.

FIG. 2 is a side view of the device.

FIG. 3 is a longitudinal sectional view taken on line 33 of FIG. 2.

FIG. 4 is a perspective view of a plug employed in the device.

FIG. 5 is a side view of another device embodying the invention.

FIGS. 6 and 7 are sectional views taken on lines 66 and 77 of FIG. 5.

FIG. 7A is a side elevational view of the set screw shown in FIGS. 5 to7.

FIG. 8 is a sectional view similar to FIG. 3 of still another deviceaccording to the invention.

Patented Nov. 9, 1965 Referring to FIGS. 1-3, there is shown a toolassembly 10 including a cylindrical casing 12 with axial cylindricalbore 11. The casing has a flat end 14 with a central hole 16. The otherend 18 of the casing is Open. The casing has a lateral longitudinal slot20. One edge of the slot 20 is calibrated to provide a scale 29 ofdegrees. Inside the casing is an axially slidable cylindrical plug 22;see FIGS. 2-4. This plug has an axial hole 24 and two spaced threadedradial holes 26, 28. A thumb screw 30 has a threaded shank 34 passingthrough slot 20 and engaged in hole 26. This thumb screw serves to slidethe plug 22 axially in the casing 12 when the screw is loose. When thescrew is tightened so that flange 35 of the screw bears on the outerside of the casing, the plug is fixed in position in the casing. Aspring clip 36 can be provided for supporting the tool on a pocket orother garment portion of a user of the tool. This clip has a hole 37through which passes shank 34, a spring tongue 39 which rides over theedges of slot 20, and two spring fingers 38 which slidably engage thecasing circumferentially. The tongue is provided with a line mark 33 tocoact With the scale 32. The clip is formed with an extension 31 on itsend opposite tongue 39, and a line mark 33 is formed on the extension tocoact with the scale 32. The clip slides with the plug when the thumbscrew is moved along the casing.

A reamer tool 40 has one end 42 engaged in hole 24 in the plug. This endof the tool 40 is engaged by set screw 44 tightened in hole 28 in theplug and accessible through slot 20 for loosening and tightening the setscrew to release and secure the tool 40 respectively. The tool 40 has atapered end 46 extending axially of the casing in align ment with hole16. As shown in FIGS. 1-3, the reamer end 46 can be adjustably extendedout of the casing through end wall 14. The reamer can be inserted into agas burner tip T shown in dotted lines in FIG. 3 for clearing orenlarging hole H in the tip. The end E of the burner tip will be placedin abutment with the flat end 14 of the casing and the reamer 40 will beextended until a desired cross-sectional area of the reamer end 46 willbe located at the plane of casing end 18. The reamer may have arectangular cross-sectional area.

The reamer 40 can be wholly retracted into the casing by moving the plug22 toward the open end 18 of the casing. The screw 30 will then belocated at the end 21 of slot 20 adjacent to casing end 18. When screw30 is loosened the reamer can be advanced out of flat end 14 a desireddistance. Then screw 30 can be tightened to fix the plug 22 and thereamer in position in the casing.

If required, the plug 22 can be removed and inserted through the openend 18 of the casing, if screw 30 is first removed.

FIGS. 5-7 show another form of the invention in which the spring clip36a is shown in dotted lines. Casing 12a is longer than casing 12. Plug22a which is slidable axially in the casing has two opposed axial endholes 24a, 24b, to receive ends 42, 42a of two reamers 40, 40a. Allentype set screws 44, 44a secure the reamer ends 42, 42a of two reamers40, 40a, in the respective holes 24a, 24b of the plug. Reamer ends 46,46a may be of the same or different sizes.

Slot portion 20' is circumferentially offset from slot portion 20" sothat the shank 34 of screw 30 must be turned slightly circumferentiallyof the casing at the slot ends 20a, 20b of the respective slot portions20', 20", in moving the plug from one end of the casing to the other.

One long edge of the slots 20 and 20" is calibrated to provide a scale29'. The thumb screw 30a is similar to screw 30 except that the shank34a is formed with an extension 34' serving as a key and shaped to bereceived in the Allen type screws 44 and 44a for turning said screws. Atransverse hole 35' is formed in the head of the screw to accommodate atool for turning.

Casing 12a is longer than the combined lengths of reamers 40 and 40a sothat both reamers can be Wholly concealed and protected within thecasing when not in use.

Casing 12a has a removable end cap 19 provided with an end Wall 17having a central hole 16b through which tool end 46a can be extended.When the cap is removed, open end 18a of the casing 12a will be clearedfor removal and insertion of plug 1211 when required. Other parts oftool assembly a corresponding to those of assembly 10 are identicallynumbered.

If desired, the reamers can be replaced by other working tools such asfiles, scribers, screwdrivers, etc. In FIG. 8, the tool assembly 10b issimilar to tool assembly 10 but reamer 40 has been replaced by a pencilor pen 40b secured in hole 24b of plug 2219. Still other Working toolsof rod-like structure may be employed in place of the tools 40, 40a and40b.

The tool assemblies 10, 10a and 10b serve as convenient, usefulaccessories for use by mechanics, repairmen, and others employing handtools of the type described.

While I have illustrated and described the preferred embodiments of myinvention, it is to be understood that I do not limit myself to theprecise constructions herein disclosed and that various changes andmodifications may be made within the scope of the invention as definedin the appended claim.

Having thus described my invention, what I claim as new and desire tosecure by United States Letters Patent is:

A reaming device of the character described compris- 3O ing, a tubularcasing having a cylindrical axial bore there in which is closed at oneend thereof by an end wall having a central aperture therein and is openat the other end thereof, a plug slidably mounted in said bore, anelongated longitudinally extending narrow slot in one side of saidcasing, said plug having an axial bore in one end there of and a pair ofspaced parallel internally threaded radial bores one of which intersectsthe said axial bore in said plug, a clip having a spring tongue which isdisposed over said slot and a pairof spring fingers which yieldably gripthe outer wall of said casing, a thumb screw having an enlarged head anda threaded shank which is inserted through an aperture in said clip andthrough said slot and is threaded into the other of said radial bores,an elongated reaming tool having a tapered body portion and a shankwhich is clamped in the said axial bore in said plug by a set screwthreaded into the said one of said radial bores, the tapered bodyportion of said tool progressively increasing in cross-sectional areafrom the outer end thereof to the said shank thereof, saidplug beingadapted to be moved back and forth in the said cylindrical bore in saidcasing to project said reaming tool out from said casing through thesaid aperture in said end wall and to retract said tool back into saidcasing, the length of said casing being greater than the combined lengthof said plug and said tool, and said clip being movable along with saidplug, a graduated scale on the outer wall of said casing adjacent oneside of said slot, said scale being calibrated in accordance with thedecreasing cross-sectional area of the said body portion of said tool,an index mark on said clip which is adapted to cooperate with said scaleto indicate the size of said body portion at the outer end of saidaperture, said plug and said clip being adapted to be clamped inadjusted position by the tightening of said thumb screw.

References Cited by the Examiner UNITED STATES PATENTS 138,528 5/73 Reedet al. 145--64X 202,654 4/78 Holland 19 468,595 2/92 Bunch -64X1,310,257 7/19 Stiles 120-19 X 1,701,771 2/29 Di Stefano 30-1621,841,190 1/32 Iustiss 85--32 2,302,621 11/42 Luboshez 8541 WILLIAM w.DYER, JR., Primary Examiner.

J. SPENCER OVERHO R, xamine

1. A REAMING DEVICE OF THE CHARACTER DESCRIBED COMPRISING, A TUBULARCASING HAVING A CYLINDRICAL AXIAL BORE THEREIN WHICH IS CLOSED AT ONEEND THEREOF BY AN END WALL HAVING A CENTRAL APERTURE THEREIN AND IS OPENAT THE OTHER END THEREOF, A PLUG SLIDABLY MOUNTED IN SAID BORE, ANELONGATED LONGITUDINALLY EXTENDING NARROW SLOT IN ONE SIDE OF SAIDCASING, SAID PLUG HAVING AN AXIAL BORE IN ONE END THEREOF AND A PAIR OFSPACED PARALLEL INTERNALLY THREADED RADIAL BORES ONE OF WHICH INTERSECTSTHE SAID AXIAL BORE IN SAID PLUG, A CLIP HAVING A SPRING TONGUE WHICH ISDISPOSED OVER SAID SLOT AND A PAIR OF SPRING FINGERS WHICH YIELDABLYGRIP THE OUTER WALL OF SAID CASING, A, THUMB SCREW HAVING AN ENLARGEDHEAD AND A THREADED SHANK WHICH IS INSERTED THROUGH AN APERTURE IN SAIDCLIP AND THROUGH SAID SLOT AND IS THREADED INTO THE OTHER OF SAID RADIALBORES, AN ELONGATED REAMING TOOL HAVING A TAPERED BODY PORTION AND ASHANK WHICH IS CLAMPED IN THE SAID AXIAL BORE IN SAID PLUG BY A SETSCREW THREADED INTO THE SAID ONE OF SAID RADIAL BORES, THE TAPERED BODYPORTION OF SAID TOOL PROGRESSIVELY INCREASING IN CROSS-SECTIONAL AREAFROM THE OUTER END THEREOF TO THE SAID SHANK THEREOF, SAID PLUG BEINGADPATED TO BE MOVED BACK AND FORTH IN THE SAID CYLINDRICAL BORE IN SAIDCASING TO PROJECT AND REAMING TOOL OUT FROM SAID CASING THROUGH THE SAIDAPERTURE IN SAID END WALL AND TO RETRACT SAID TOOL BACK INTO SAIDCASING, THE LENGTH OF SAID CASING BEING GREATER THAN THE COMBINED LENGTHOF SAID PLUG AND SAID TOOL, AND SAID CLIP BEING MOVABLE ALONG WITH SAIDPLUG, A GRADUATED SCALE ON THE OUTER WALL OF SAID CASING ADJACENT ONESIDE OF SAID SLOT, SAID SCALE BEING CALIBRATED IN ACCORDANCE WITH THEDECREASING CROSS-SECTIONAL AREA OF THE SAID BODY PORTION OF SAID TOOL,AN INDEX MARK ON SAID CLIP WHICH IS ADAPTED TO COOPERATE WITH SAID SCALETO INDICATE THE SIZE OF SAID BODY PORTION AT THE OUTER END OF SAIDAPERTURE, SAID PLUG AND SAID CLIP BEING ADAPTED TO BE CLAMPED INADJUSTED POSITION BY THE TIGHTENING OF SAID THUMB SCREW.